Whether you're running Hydras, Adapt creatures, or Backup cards, the ability to take to the skies can quickly overwhelm opponents who lack flying blockers
Lord of the Rings updated the mechanic to make unique armies, but all the amass cards from War of the Spark generate zombie armies
For a deck that is mono-colored or is only one type of mana, players normally can take out an additional basic mana card, preferably not going below 20 mana to avoid becoming mana starved
The other push for commander is that its often seen as a place where kitchen table players get to play what they want, instead of what a format decides is necessary
This will almost certainly see some play as redundancy for Exploration in some of the more focused constructed decks
A */1+*, where * was equal to the number of creature cards in all graveyards